raunakraj2712

1.00 kg of water at 293 K is heated at a constant pressure of 1.00 atm until it completely evaporates. The heat capacity of water is 1.00 cal/(g*K). The molar enthalpy of vaporization is ΔHvapM = 40.7 kJ/mol. You may treat H2O vapor as an ideal gas. What are ΔH, ΔU, q, and w for this process (all in kj)?

Please show/explain how you came to the answer.

ΔH is not 2261 kj

1.00 kg of water at 293 K is heated at a constant pressure of 1.00 atm until it completely evaporates. The heat capacity of water is 1.00 cal/(g*K). The molar enthalpy of vaporization is ΔH_vapM = 40.7 kJ/mol.

You may treat H2O vapor as an ideal gas.

1 kcal = 4.1868 kJ

What are

a) ΔH in kJ

b) ΔU in kJ

c) q in kJ

d) w for this process?

Please explain each steps.

1.00 kg of water at 293 K is heated at a constant pressure of 1.00 atm until it completely evaporates. The heat capacity of water is 1.00 cal/(g*K). The molar enthalpy of vaporization is ΔHvapM = 40.7 kJ/mol. You may treat H2O vapor as an ideal gas.

What are ΔH, ΔU, q, and w for this process?

1 kcal = 4.1868 kJ

Calculate Δ𝐻, Δ𝑆, Δ𝑆𝑠𝑢𝑟, 𝑎𝑛𝑑 Δ𝑆𝑢𝑛𝑖𝑣 when 4.31 moles of H2O(g) condenses at 58 oC at 1.0 atm until it is a liquid. Assume that all heat capacities and enthalpy changes are constant. And given 𝐶𝑝,𝑙 = 75.3 𝐽 𝐾 𝑚𝑜𝑙 ,𝐶𝑝,𝑔 = 35.9 𝐽 𝐾 𝑚𝑜𝑙 ,𝑇𝑣𝑎𝑝 = 100 𝐶, Δ𝑣𝑎𝑝𝐻 40.7 𝑘𝐽 𝑚𝑜𝑙

Newton Laws

I asked this question already, but would like a bit of a more details guide because I'm still really confused on what sort of experimental design would work. My biology professor suggested that DNA isolation from the tail clipings of the lizards would be a better way to go about this. But how would that be done exactly and why would that work better as opposed to statistical testing (or any other method of testing for finding out whether the species interacted or not)?

You are part of research team that travels to a small island, Isla Naturale, to study various organisms on the island. When you get there you and a couple of colleagues decide to survey areas that seem to have very little organisms present like the beach and near the lava rocks. You notice that you can see a few lizards running around, they are nearly identical in every way except for their color. One lizard is light brown with white spots found mostly at the edge of the coast and the other is a gray color with black spots found to nest under lava rocks. You would like to test if they are separate species or if they interact with one another. Using the scientific method, design an experiment in regards to DNA extraction that would allow you to answer your question. (HINT: extract DNA from the tail clipings of the lizards)